Color

#427ac2

#427ac2
hex#427ac2
rgbrgb(66, 122, 194)
hslhsl(214, 51%, 51%)
oklchoklch(0.576 0.126 255.6)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1897

Colors that go with #427ac2

Charcoal, Sea Green and Copper lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#c28b42

#42b9c2 · #4b42c2

#c2427a · #7ac242

Split-complementary

Open in tool →

#c24b42 · #b9c242

#c242b9 · #c28b42 · #42c24b

Contrast

#427ac2 as textRatioAAAA largeAAAFix
Aaon white
4.38:1failpassfail
  • AA: use #3e77c1 as the text (4.55:1)
  • AAA: use #2f5a92 as the text (7:1)
  • AA: or shift the background to #0a0a0a (4.52:1)
Aaon black
4.79:1passpassfail
  • AAA: use #6d98d0 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #427ac2 as the background.

Brands using this color

Fonts for this mood

#427ac2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #427ac2
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #427ac2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/427ac2-9ca9c4-df5a4e-1f1f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md